Unit 6 Disaster and hope二-2025-2026学年高中英语词汇变形及词缀精讲必修第三册（外研版）

高中必修第三册外研 Unit6词汇变形及词缀精讲 【Unit6】Disaster and hope 词汇变形及词缀精讲 全部单元单词 crisis/'kraisIs/n.危机 要不然 have yet to还没有 threaten/'ret/v.威胁到，危helicopter/'helikppta(r)/n.直升threat/ret/n.威胁，可能会带 及 机 来危险的人（事） satellite/'saetalart/n.人造卫星 mosquito/m3'ski:ta/n.蚊子 property/'prDpati/n.所有物，资 precisely /prI'sarsli//adv.精确地，midnight/midnart/n.子夜，午产，财产 准确地 夜 sufficient /sa'fint/adj.足够的， billion/'biljan/num.十亿 the Big Dipper北斗七星 充足的 la即p1ep/n.(坐着时的)大腿部the Little Dipper小北斗七星 shelter∫elta(r)/n.庇护，掩蔽 nowhere/'neuwea(r)/adv.什么the Milky Way银河 地方都不，无处 county/'kaonti/n.(美国等国 otherwise /'AoawaIz/adv..否则，家的)县：（英国的）郡 词汇变形及词缀精讲 1.crisis/'krarsis/n.危机 词汇变形 复数形式：crises/'krarsi:z/ 构词解析 无典型前后缀，属于不规则名词复数变化(-is→-es)。 同类词：analysis→analyses(分析)、thesis→theses(论文) The environmental crisis requires immediate action from all countries. 真题链接（外研版高中必修第三册单元练习）：The company faced several (crisis)last year but managed to survive.(答案：crises) 2.threaten/'retn/v.威胁到，危及 词汇变形 名词形式：threat/ret/ 形容词形式：threatening/'retn/(威胁性的) 构词解析 后缀-n:加在名词后构成动词，表“使…；做…”。 例句：Pollution threatens the survival of many species. 1 高中必修第三册外研 Unit6词汇变形及词缀精讲 真题链接（外研版高中必修第三册阅读填空)：The storm (threat)to destroy the village,so people had to evacuate.(答案：threatened) 3.satellite/'saetlart/n.人造卫星 构词解析 前缀satelli-(源自拉丁语“随从”)：后缀-ite:表“…物：…人”。 同类词：meteorite(陨石)、magnetite(磁铁矿) 例句：The satellite sends back images of the Earth every day.. 真题链接（外研版高中必修第三册课文原句）：A new satellite was launched to study climate change. 4.precisely /prI'sarsli/adv.精确地，准确地 词汇变形 形容词形式：precise /prI'saIs 名词形式：precision /pri'sI3/ 构词解析 前缀pre-:表“预先；前”；后缀-y:构成副词；-ion:构成名词表“性质”。 例句：The experiment must be done precisely to get accurate results. 真题链接（外研版高中必修第三册语法填空）：Can you measure the length (precise)with this uler?(答案：precisely) 5.billion/'biljan/um.十亿 词汇变形 复数形式：billions(表不确定数量时) 构词解析 前缀bi-:表“二”；后缀lion:表“百万的倍数”（原义“万亿”，现英美式均常用“十亿”）。 固定搭配：billions of(数十亿的) 例句：The universe is estimated to have billions of galaxies 真题链接（外研版高中必修第三册听力填空）：The project will cost over two (billion)dollars. (答案：billion) 6.mosquito/m3'ski:ta/n.蚊子 词汇变形 复数形式：mosquitoes/m'ski:teUz/或mosquitos 构词解析 无典型前后缀，复数加-es或-s(以-0结尾的生物名词常加-es)。 例句：Mosquitoes are known to spread diseases like malaria.. 真题链接（外研版高中必修第三册单元练习）：We need to use mosquito nets to avoid being bitten by (nosquito).(答案：mosquitoes) 7.threat/ret/n.威胁，可能会带来危险的人（事） 词汇变形 动词形式：threaten/'Oretn/ 2 高中必修第三册外研 Unit6词汇变形及词缀精讲 形容词形式：threatening/'Oretnu)/ 构词解析 后缀h:构成抽象名词（少数动词→名词)。 固定搭配：pose a threat to(对…构成威胁) 例句：The new policy has reduced the threat of unemployment. 真题链接（外研版高中必修第三册阅读理解）：What is the biggest (threat)to the local ecosystem? (答案：threat) 8.property/propati/n.所有物，资产，财产 词汇变形 形容词形式：proper/ppar)/(适当的；固有的) 构词解析 前缀pro-:表“向前；公开”：后缀y:构成抽象名词，表“性质：状态”。 例句：He inherited a large amount of property from his grandfather.. 真题链接（外研版高中必修第三册完形填空）：The company's(property)includes several factories and offices.(答案：property) 9.sufficient/sa'fint/adj.足够的，充足的 词汇变形 副词形式：sufficiently/sa'fi[ntli/ 名词形式：sufficiency/sa'fnsi 构词解析 前缀suf.(=sub-,表“下：充分”)：后缀-ent:构成形容词：-y:构成副词；-cy:构成名词。 例句：We need sufficient time to finish the project. 真题链接（外研版高中必修第三册语法填空)：Is the water supply一(sufficient)for the village?? (答案：sufficient) l0.shelter /'felta(r)/n.庇护，掩蔽：v.庇护 词汇变形 动词形式：shelter(同形) 形容词形式：sheltered/'∫eltad/(受庇护的) 构词解析 无典型前后缀，名词动词同形。 固定搭配：take shelter(躲避) 例句：The cave provided shelter from the rain. 真题链接（外研版高中必修第三册课文原句）：Local residents were sheltered in the school during the storm. 11.nidnight/'midnart/.n.子夜，午夜 构词解析 前缀mid-:表“中间的”；词根night(夜晚)。 同类词：midday(中午)、midweek(周中) 3 高中必修第三册外研 Unit6词汇变形及词缀精讲 例句：The train is scheduled to arrive at midnight.. 真题链接（外研版高中必修第三册听力填空）：The celebration will start at (midnight)and last until dawn.（答案：midnight) 12.county/'kaonti/n.县；郡 词汇变形 复数形式：counties 构词解析 后缀y:构成名词，表“状态；地方”（源自拉丁语“行政区”）。 例句：The accident happened in a small county in the north. 真题链接（外研版高中必修第三册阅读填句）：The new hospital will serve three nearby (county). (答案：counties) 综合训练 一、 根据句意及汉语提示完成单词 6.The environmental (requires immediate action from all countries. 7.Anew (卫星)was launched to study climate change. 8.The company's()includes several factories and offices. 9.We need (足够的)time to finish the project. 10.The celebration will start at()and last until dawn. 二、用所给单词的适当形式填空 6.The company faced several(crisis)last year but managed to survive. 7.The storm (threat)to destroy the village,so people had to evacuate. 8.Can you measure the length(precise)with this ruler? 9.The project will cost over two(billion)dollars. 10.We need to use mosquito nets to avoid being bitten by (mosquito). 11.What is the biggest(threat)to the local ecosystem? 12.The new hospital will serve three nearby (county) 三、完成句子（每空一词） 高中必修第三册外研 Unit6词汇变形及词缀精讲 1.污染危及许多物种的生存。 Pollution the of many species. 2.这个洞穴为我们提供了避雨的地方。 The cave from the rain 3.据估计，宇宙中有数十亿个星系。 The universe is estimated to have galaxies. 4.这项新政策减少了失业的威胁。 The new policy has reduced the unemployment. 四、语篇填空 阅读下面短文，在空白处填入一个适当的单词或用括号内单词的正确形式填空，使短文通顺、连 贯。 A recent environmental report warns of global (crisis).One major issue is pollution,which (threat)wildlife habitats.To monitor this,a new (satellite)was launched last month.It sends back data (precise)to scientists,who analyze changes in ecosystems.For example,in a certain (county),mosquitoes are spreading diseases due to rising temperatures.Local govern- ments are taking action to protect property and ensure (sufficient)resources for residents.By midnight,teams will distribute mosquito nets to over a billion people,hoping to reduce health risks. 参考答案 I.根据句意及汉语提示完成单词 6.crisis 7.satellite 8.property 9.sufficient 10.midnight Ⅱ用所给单词的适当形式填空 6.crises 7.threatened 8.precisely 9.billion 10.mosquitoes 11.threat 12.counties IL.完成句子 1.threatens;survival 2.provided shelter 3.billions of 4.threat of V.语篇填空 1.crises 2.threatens 3.satellite 4.precisely 5.county 6.sufficient J